E-MTAB-3139 - Transcriptome profiling of mouse pancreatic epithelium from Pdx1-Ngn3ER-IRES-GFP mice bred into a Neurog3-null background at embryonic day 11.25
Released on 2 December 2014, last updated on 30 January 2017
Individual pancreatic buds of crosses between Ngn3+/- and Ngn3+/- ; Pdx1::Ngn3ER TM -IRES-GFP were dissected. Pregnant females were injected intra-peritoneal with 2mg of Tamoxifen at e10.25 (9 am) and dissected at e11.25 (9 to 11 am). Most of the mesenchymal tissue was removed to reduce the tissue complexity of the sample and enrich in epithelial pancreas progenitors. Moreover, at that developmental stage, Pdx1 promoter exhibits strong and homogenous expression levels. Rescuing Ngn3 expression only 24 hours before dissection (12h before activity, due to the time to process tamoxifen into the active compound 4OH tamoxifen) enriches the gene list in direct targets of Ngn3.
transcription profiling by array, genetic modification design
Planar cell polarity controls pancreatic beta cell differentiation and glucose homeostasis. Cortijo C, Gouzi M, Tissir F, Grapin-Botton A. , PMID:23177622